Okay - I had my first flat a few weeks ago and I think it took three hours to change it! But this time, it was much faster!!! Like 15 minutes - if that! EXCEPT - after I aired up the tire the valve stem looks stumpy. There's a little bit and then the cap. (I have a Giant FCR) So, I have the car kind of stem...is that schreader? Oi.

My question is - do I need to re-do it? And how do I keep it from getting sucked in?!

Thanks!